Savage28AC Posted February 11 Report Share Posted February 11 I have a transferable AO/Savage 1928AC with the L sight currently. I bought an adjustable Lyman sight as a possible replacement. Has anyone done this? Possible concerns? Bad idea? Link to comment Share on other sites More sharing options...
Weasel Posted February 11 Report Share Posted February 11 Change the sight over to adjustable. Not hard to due yourself. I installed mine on a 1928a1 get the rivets, make a bucking bar and use a punch on the inside to flair out and then level off good luck Link to comment Share on other sites More sharing options...
jim c 351 Posted February 11 Report Share Posted February 11 Great idea . It will be a better shooter. I did it with my 1928. Save the "L" sight for when you sell. Next owner might want to switch back. Jim C Link to comment Share on other sites More sharing options...
Savage28AC Posted February 11 Author Report Share Posted February 11 Appreciate it! Link to comment Share on other sites More sharing options...
Savage28AC Posted February 29 Author Report Share Posted February 29 Had a local gunsmith that works on MGs do the switch...not exactly sure what to think. Hex nuts? Link to comment Share on other sites More sharing options...
Bridgeport28A1 Posted February 29 Report Share Posted February 29 12 minutes ago, Savage28AC said: Had a local gunsmith that works on MGs do the switch...not exactly sure what to think. Hex nuts? Did your “gunsmith” thread the rivet holes on your receiver? Did you ask him to use rivets? Link to comment Share on other sites More sharing options...
Savage28AC Posted February 29 Author Report Share Posted February 29 Asked about the threading, not clear from looking under. Ya I was pretty clear about not fucking this up Link to comment Share on other sites More sharing options...
StrangeRanger Posted February 29 Report Share Posted February 29 If the idiot threaded the holes thank him for destroying the value of your gun Then sue his ass off Link to comment Share on other sites More sharing options...
Centrifugal Arms Posted February 29 Report Share Posted February 29 I’m with StrangeRanger and based on the size of the head on those bolts he not only threaded the holes but likely enlarged them to do it. This person has no business working on MGs and I’m really sorry that happened to your gun. Link to comment Share on other sites More sharing options...
brveagle Posted February 29 Report Share Posted February 29 1 hour ago, Savage28AC said: Asked about the threading, not clear from looking under. Ya I was pretty clear about not fucking this up Well if it doesn't have nuts under holding the bolts in place, then yeah he threaded your receiver.... Link to comment Share on other sites More sharing options...
bug Posted February 29 Report Share Posted February 29 Make sure he finished the inside so you can shoot it. It can be fixed but make sure you have a good TSMG mechanic this time. Link to comment Share on other sites More sharing options...
TD. Posted February 29 Report Share Posted February 29 Hi Savage28AC, Welcome to the Thompson forum on MachineGunBoards.com. The Auto-Ordnance Bridgeport 1928AC Thompson submachine gun is great shooter grade submachine gun that I recommend often to those new to the Thompson community. It is a parts gun but from the original manufacturer. I have spent years studying this variation, especially the time frame in which it was manufactured and sold by Auto-Ordnance Corporation and/or Maguire Industries. My research on the 28AC variation can be found in my third book, A Thompson Compendium. Over 80 known serial numbers with pictures of 1928ACs are featured. Yours may be one of them! Regarding your rear sight, the 1928AC is one of the best Thompson guns to modify because there was no real standardization of parts for this variation. Yes, most have the L rear sight and smooth barrel. I assume the gunsmith you hired to install the Lyman rear sight apparently threaded the rivet holes. That said, the sight is still operational so no problems with shooting the gun. If you want to correct this situation, I suggest reaching out to PK. or Paul Krogh, a forum member, to see if he can remedy the problem with the proper rivets. PK is one of the best Thompsonsmiths. Period. PK. can be reached at: p-k@q.com. I suggest sending him the picture you posted above, along with this link, and asking him what he can do to make your 1928AC look original. Do not expect a fast reply. PK. is very busy and often takes a few days to respond. If your interested in learning more about your 1928AC and/or filing a Freedom of Information Act (FOIA) request, contact me at: tkd5501@fuse.net. TD. Link to comment Share on other sites More sharing options...
Savage28AC Posted February 29 Author Report Share Posted February 29 Ya he said he tapped the holes. I’m pissed. But if it’s fixable later I’ll survive Link to comment Share on other sites More sharing options...
StrangeRanger Posted February 29 Report Share Posted February 29 It can be repaired but a repaired gun is substantially less valuable than one in original condition. The holes will need to be welded up, drilled out and the inside and outside surfaces of the receiver will need to machined flat. Then the receiver will probably need to be refinished. This is not a cheap repair and once it's done your receiver will NOT be "good as new." How much value it has lost will depend on how visible the repair is. Someone more knowledgeable about 28 collector values than I am may be able to give you an estimate Link to comment Share on other sites More sharing options...
TD. Posted February 29 Report Share Posted February 29 Savage28AC, I would not worry too much about the 28AC you have being greatly devalued. The Auto-Ordnance Bridgeport (AOB) 1928AC variation is not really a collector grade gun. It is a shooter grade gun that will hold its value no matter what is done to it. I would bet there are some who would pay more just for the Lyman adjustable rear sight regardless of how it is installed. This variation used to be in the 22K to 25K price range. I have seen a little price creep for this variation of late. Generally speaking, the AC variation costs more than a 1928 West Hurley and is a much better gun. Ruben Mendiola has one on sale with a nickel or chrome receiver and barrel at 32K. If mine, I would obtain an estimate for repair and proceed accordingly. While I recommended PK., forum members "deerslayer" and "GotUzi" also repair Thompson guns and do great work. Maybe one is within driving distance. If not already a member, you should consider joining one or both of the Thompson associations. Both have a private Show & Shoot in Ohio later this year. If you are close, you should think about joining and attending. I guarantee a great time! Link to comment Share on other sites More sharing options...
Savage28AC Posted February 29 Author Report Share Posted February 29 Thanks. I got it for 28k a few years ago. I’ll post pics from the inside when I get a chance. It’s a shooter and I will likely keep it for a while regardless, just frustrating Link to comment Share on other sites More sharing options...
Savage28AC Posted February 29 Author Report Share Posted February 29 (edited) Bottom view. It looks pretty good at least, the top view pic I posted isn’t the best angle Edited February 29 by Savage28AC Link to comment Share on other sites More sharing options...
Got Uzi Posted March 1 Report Share Posted March 1 All I can say is….such an amazing job from a HACK! What jackass thought this would be acceptable? Link to comment Share on other sites More sharing options...
Savage28AC Posted March 1 Author Report Share Posted March 1 Ya, still angry but is what it is at this point. Going to forget about it and keep blasting away Link to comment Share on other sites More sharing options...
DFisch Posted March 1 Report Share Posted March 1 I’m not sure if this is a viable solution, but I remember when I was building an airplane there were aluminum AN rivets available that had a larger diameter body with the same diameter head as a standard rivet. They were for oversized holes but looked like a normal rivet. Maybe something like this could be used? Just a thought… Link to comment Share on other sites More sharing options...
Got Uzi Posted March 1 Report Share Posted March 1 The problem is the “investment” value of this Thompson has been ruined because someone thought they’d “upgrade” it and obviously has no clue how things work. The only way this could be fixed would be to weld the holes shut then redo them. It would help for down the road but it’s still going to be a “repaired receiver” the other option could be that you could have a set of custom rivets made with large bottoms and small diameter stems to be peen’d over Link to comment Share on other sites More sharing options...
Savage28AC Posted March 1 Author Report Share Posted March 1 37 minutes ago, Got Uzi said: The problem is the “investment” value of this Thompson has been ruined because someone thought they’d “upgrade” it and obviously has no clue how things work. The only way this could be fixed would be to weld the holes shut then redo them. It would help for down the road but it’s still going to be a “repaired receiver” the other option could be that you could have a set of custom rivets made with large bottoms and small diameter stems to be peen’d over Will keep this in mind Link to comment Share on other sites More sharing options...
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